154256441 has 4 divisors (see below), whose sum is σ = 158425572. Its totient is φ = 150087312.

The previous prime is 154256393. The next prime is 154256449. The reversal of 154256441 is 144652451.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 144652451 = 23 ⋅6289237.

It can be written as a sum of positive squares in 2 ways, for example, as 62173225 + 92083216 = 7885^2 + 9596^2 .

It is a cyclic number.

It is not a de Polignac number, because 154256441 - 2²² = 150062137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 154256398 and 154256407.

It is not an unprimeable number, because it can be changed into a prime (154256449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2084510 + ... + 2084583.

It is an arithmetic number, because the mean of its divisors is an integer number (39606393).

Almost surely, 2^154256441 is an apocalyptic number.

It is an amenable number.

154256441 is a deficient number, since it is larger than the sum of its proper divisors (4169131).

154256441 is an equidigital number, since it uses as much as digits as its factorization.

154256441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4169130.

The product of its digits is 19200, while the sum is 32.

The square root of 154256441 is about 12420.0016505635. The cubic root of 154256441 is about 536.3081980874.

The spelling of 154256441 in words is "one hundred fifty-four million, two hundred fifty-six thousand, four hundred forty-one".